Adjustable end die



J. G. WRIGHT. ADJUSTABLE END-DIE. APPLICATION FILED .'AN.17. 1919.

Patented Feb. 8, 1921.

JmMbz cf. 6. Wrz'azz.

UNITED STATES JOHN G. WRIGHT, 0F TYTLER, TEXAS.

ADJUSTABLE END DIE.

Specification of Letters Patent.

Patented Feb. 8, 1921.

Application filed January' 17, 1919. Serial No. 271,660. 7

To all whom it may concern:

Be it known that 1, JOHN G. lVnroH'r, a citizen of the United States,residing at Tyler, in the county of Smith and State of Texas, haveinvented certain new and useful Improvements in Adjustable End Dies; andI do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

My invention relates to improvements in means for rethreading bolts,pipes and other threaded pieces of metal.

An important object of this invention is to provide an adjustable enddie adapted for conveniently rethreading bolts and the like whileengaged with an object.

A further object of the invention is to provide a device of thecharacter described, which is easy to apply, capable of being used indifficult places and possessed of great utility.

A further object of the invention is to provide a device of thecharacter described which may be used as a vise for holding bolts andthe like while the same are being worked upon.

A further object of the invention is to provide a device of thecharacter described, which by virtue of its extreme simplicity and greatutility, will meet with commercial success when placed upon the market.

Other objects and advantages of the invention will be apparent duringthe course of the following description.

In the accompanying drawings forming a part of this specification, andin which like numerals are employed to designate like parts throughoutthe same,

Figure 1 is a side elevation of an adjustable end die embodied in myinvention,

Fig. 2 is a longitudinal section through the same, and,

Fig. 3 is a perspective of a pivoted jaw embodied in the invention.

In the drawings, wherein for the purpose of illustration is shown thepreferred embodiment of my invention. the numeral?) genericallydesignates an adjustable end die, which in manufacture may be made of asuitable tool steel. The device includes a pair of coacting jaws 6 and 7arranged in superposed relation and having their inner sides providedwith cutting teeth 8. As shown in Fig. 2, the teeth 8 are of a. lesserheight at their inner ends of the jaws than at the outer ends thereof.It is thus apparent that the jaws 6 and 7 are engaged with a threadedbolt at a point spaced from its forward end thereof and in rethreadingthe same, the jaws 6 and 7 are rotated in a. directlo n to remove thedevice from the bolt. A pair of apertured ears 9 are carried by theinner sides of the jaws 6 and 7 at points spaced from the ends thereof.A pivot element 10 extends through alining openings in the aperturedears 9 and have enlarged heads 11 formed on their opposite ends. Thelower jaw 6 is provided with an openmg 12 in alinement with a slightlyelongated opening 13 in the upper jaw 7. The openings 12 and 13 receivea bolt 14 having threaded engagement with a nut 15. A head 16 carried bythe bolt 14 has a relatively small lug 17 arranged on its inner face andextending into a slot 18. The lug 17 extending into the slot 18 preventsthe acci dental rotation of the bolt 14.

Thebolt 15 is adapted to be rotated for ad usting the jaws 8 inwardlyand outwardly. A coil spring 19 arranged on the bolt 15 and disposedbetween the jaws 6 and 7 normally retains the jaws 6 and 7 in an outwardposition. A polygonal handle 20 is connected to the lower jaw 6 by aninclined shank 21 which can be made as long as desired. The upper jaw 7has an arm 22 extending rearwardly therefrom and carrying a set screw23. The set screw 23 1s adapted for contact with the inner face of theshank 21 and is adapted to cooperate with the bolt 14 in adjusting thejaws 6 and 7.

.Vhile I have shown and described the preferred embodiment of myinvention, it is understood that I may make such minor changes inarrangement and construction of parts. as will remain within the spiritof the invention and scope of the appended claims.

Having thus described my invention, what I claim is 1. A device of thecharacter described comprising, a pair of coacting pivoted jaws; cuttingteeth carried by the inner sides of said jaws; a bolt extending throughsaid jaws intermediate their ends thereof; a nut engaging the bolt andlimiting outward movement of the jaws; a coil spring arranged on saidbolt and adapted to normally retain said jaws and cutting teeth inspaced relation permitting movement of the jaws toward each other; ahandle formed integral with one of said jaws, an arm extendingrearwardly from the other of said jaws; and a set screw carried by saidarm and serving to restrict relative movement of the jaws within thelimit fixed by the aforesaid bolt and nut.

2. A device of the character described comprising, a pair of coactingjaws; cutting teeth carried by the inner sides of said jaws at theirforward end portions thereof, said cutting teeth being of a lesser widthat their inner sides than at their outer sides thereof; aliningapertured ears carried by the inner sides of said jaws; a pivot-element

